But...I do not see the value in being able to "prove" that you own said artwork...because you can't do it...Globally, the number of people who know what Ethereum or any other block-chain technology means is probably what..many thousands? Maybe..maybe a few hundred thousand? And of those the subset of people who actually care...I'm sure is far fewer. So you can only verify yourself as the "owner" of said art to a very small subset of people...
I guess it's like a collector community? People are willing to spend literally millions of dollars to prove to other collectors that they are the owners of these digital assets?